front spindles must be removed and the hub pressed out then the bearings pressed out. it takes about 2 hours a side in a shop which requires a press. not a job for the driveway.
call around for estimates at different shops.
try our directory tab at the top for a bid at a shop near you.
Roy

Yep bearings need to be pressed out and into the steering knuckle. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com